摘要:

A new speciesOmalanthus gracilisis described from Raivavae Island; new locality records forO. nutans(Forst. f.) Pax are reported; the description ofO. stokesiiF. Br. is emended.

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01971.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Machaerina involutasp. nov., andUncinia rapaensissp. nov. (Cyperaceae) are described from Rapa Island, Austral Islands, South Pacific Ocean, based on morphology.

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01972.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Observations of living flower–heads ofTussilago farfarawith ultraviolet light have confirmed the previously known distinction between the UV absorbing disc–flowers and the UV reflecting ray–flowers. A further differentiation of the yellow colours in the capitulum is that the anther walls fluoresce when exposed to UV

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01973.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Microconidia and ascogonial coils were produced by the two strains ofSordaria brevicollis, WTA and WTa. Over 90% of the microconidia, which functioned chiefly for sexual reproduction, germinated producing short–lived germ tubes. Ascogonial coils with conspicuous trichogynes were observed. A hypha was initiated from the base of the ascogonial coil and soon completely surrounded it, giving rise to the protoperithecium. The ascogonial coil became the ascogonium within the proto–perithecium, and it was surrounded by a pseudoparenchymatous centrum. Many paraphyses arose from pseudoparenchymatous cells. The ascogonium followed the Sordariaceous type of development and gave rise to ascogenous hyphae, croziers, unitunicate asci and ascospores. Anomalous perithecia were observed and perithecia reached maturity 9–1 1 days after inocul

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01974.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Elaphomyces striatosporus(Ascomycetes, Plectascales), originally described from a single find from southern Norway, is recorded from five localities in Sweden. The known Scandinavian distribution is mapped. Notes on morphology and habitats are presented. The peculiar exospore ornamentation found in the original material, is characteristic also of the new finds. The fungus grows in close association withCorylus avellana, with which it probably forms mycorrhiza. The northernmost Swedish locality corresponds to a relict locality forCorylus.It is suggested thatE. striatosporustoo may be a relic there.

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01975.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Arthothelium norvegicumCoppins&Tonsb. sp. nov. is most closely related toA. ruanum(Massal.) Zwackh, but is morphologically, anatomically and ecologically distinct. It is known from one locality in Central Norway.

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01976.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01977.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Cladonia(sect.Cocciferae, subsect.Ochroleucae) norvegicaT0nsb.&Holien sp. nov., is closely related toC. bacilliformis(Nyl.) DT.&Sarnth. but is morphologically, chemically, and ecologically distinct. Superficially it may resembleC.(sect.Cladonia) coniocraeaauct., which is often growing with it.C. norvegicais known from Norway only.

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01978.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

Ten species are recognized in the genusHypocenomyce.Their morphology, anatomy, chemistry, and ecology are discussed, a key is provided, and their distribution in Norway and Sweden is mapped.Hypocenomyce australisTimdal andH. foveataTimdal are described as new, and the combinationsH. castaneocinerea(Räsänen) Timdal andH. praestabilis(Nyl.) Timdal are proposed. The genus can be divided into four species groups on the basis of apothecial and conidial characters, type of pigment in the epithecium and pyenidial wall, and chemical properties of the thallus. The delimitation of the genus in relation toLecideas. lat. is in need of further elucidatio

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01979.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY

摘要:

The marine prasinophycean flagellate presently known asNephroselmis gilvahas been examined, using both the type culture and material from temperate (Denmark, New Zealand) and tropical waters (Thailand). All cell surfaces are covered with unmineralized scales, two types on the body, two on the flagella including flagellar hairs. The detailed structure of the scales is described, using high power electron microscopy of detached positive–stained scales. Previously overlooked organelles within the cell include large numbers of extrusive bodies, a rare type of organelle in chlorophyll–a– and –b–containing organisms, and an eyespot.N. gilvadiffers profoundly from the type species ofNephroselmis, and is transferred to the new genusMamiella. Mamiella gilvais closely related toMantoniella squamata.Together with the genusDolichomastixthey form the new family, Mamiellaceae, a small group of marine flagellates of worldwide distribution.The members of the new family probably represent the most primitive extant prasinophytes. When compared with other members of the class, its species stand out, particularly by the lack of small square or diamond–shaped scales on the flagella and cell body. It is suggested that the Mamiellaceae should be referred to a separate order,

ISSN:0107-055X    

DOI:10.1111/j.1756-1051.1984.tb01980.x

出版商:Blackwell Publishing Ltd    

年代:1984

数据来源: WILEY